2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224337The integration-by-parts formula discovered by Malliavin for the Ito map on Wiener space is proved using the two-parameter stochastic calculus. It is also shown that the solution of a one-parameter stochastic differential equation driven by a two-parameter semimartingale is itself a two-parameter semimartingale.19 pagesProbabilityTwo-parameter stochastic calculus and Malliavin's integration-by-parts formula on Wiener spacetext